Key to species of the genus Crassacarus gen. nov. (see Table 3 for differential characters)

(females)

*—species occurring in New World.

1. Leg III with 1 articulated segment....................................................................... 4

- Legs III with 2 articulated segments..................................................................... 2

2. Palp 1.5–1.8 times longer than wide. Palpal setae l”G shorter or subequal to dF. All setae of legs III and IV long filiform.. 3

- Palp only 1.3 times longer than wide. Palpal setae l”G 1.3 times longer than dF. Some setae of legs III and IV short, spur-like..................................................................... C. melanerpes sp. nov. * (Figs. 60–62)

3. Setae vF smooth. Setae h2 110 long. Genua I and II with 1 seta (l’)................... C. fritschi sp. nov. * (Figs. 56, 57)

- Setae vF serrate. Setae h2 60–70 long. Genua I and II without setae................... C. sialia sp. nov. * (Figs. 58, 59)

4. Legs I and II with 4 articulated segments dorsally (femur and genu fused)....................................... 5

- Legs I and II with 5 articulated segments dorsally (femur and genu separated). C. cylindripalpus (Fritsch, 1954) comb. nov.

5. Setae h2 serrate. Legs I and II with 4 articulated segments ventrally (femur and genu fused)................................................................................................... C. alexfaini sp. nov. * (Figs. 50–52)

- Setae h2 smooth. Legs I and II with 5 segments ventrally (femur and genu separated)..... C. tinae sp. nov. * (Figs. 53–55)